Subtracting Integers
Standard
7.N.6 Use the inverse relationships of addition and subtraction, and of multiplication and division, to simplify computations and solve problems, e.g., multiplying by 1/2 or 0.5 is the same as dividing by 2.
Cluster
C11
Objective
To use rules to subtract integers
Lesson
When you are subtracting a negative from a negative ...
You can use tiles to help you
-6 - (-2)
Start off with 6 negative tiles (Red= negative, Yellow= positive)
(
)
If you take away 2, you are left with 4 negatives.
When you are subtracting negatives and positive...
ADD THE OPPOSITE
Rewrite the problem by adding the opposite then you can use tiles
2 - 4 = -2
2 + (-4) =-2
